I have installed eclipse from the lubuntu software center , and I wrote a simple GUI application using awt package . It's working But now I would like to install rxtxcomm for java , famous library to handle the serial port . Reading the documentation about rxtxcomm , they say that I have to install rxtxcomm.jar and rxtxcomm.so into the java home directory At the moment I did these operation to know where is my java openjdk and to set up the JAVA_HOME path . By the terminal I tape which java -> answer /usr/bin/java export JAVA_HOME =/usr/bin/java export PATH=$JAVA_HOME/bin:$PATH these operations were done without any pronlems But before to install rxtxcomm.jar and rxtxcomm.so I want to know if my procedure is correct ... Somebody know if I'm doing right ? Thanks Walter
Does not seem wrong. However, there are two things to consider: 1. Have you downloaded an actual ARM library? Or did you download an x86 one? 2. A quick googling tells me there is a package in the Ubuntu software repo. Have you tried that? http://stackoverflow.com/questions/1138 ... 4-netbeans
yes, I know what you mean ....... I already had installed x86 and i32 version of rxtxcom but as I wrote in a post , they doesn't work because these library are done for iCore , ia32 and other architecture of processor different then ARM ..... I have seen the stack overflow article and I'm trying to download the corret version of the library because the original web site is off. I think the correct library is used by the freedomotic ...I have downloaded freedomotic-bender-5.5.1 The rxtxcom library I have downloaded is for ARM processor librxtxSerial.so -> 166 k RXTXcomm -> 59 k I hope to do right .... :?
I solve some problems but now when I start my application I have this error message run: Stable Library ========================================= Native lib Version = RXTX-2.2pre2 Java lib Version = RXTX-2.1-7 WARNING: RXTX Version mismatch Jar version = RXTX-2.1-7 native lib Version = RXTX-2.2pre2 gnu.io.NoSuchPortException at gnu.io.CommPortIdentifier.getPortIdentifier(CommPortIdentifier.java:218) at netbeans1.TwoWaySerialComm.connect(TwoWaySerialComm.java:12) at netbeans1.Netbeans1.main(Netbeans1.java:14) BUILD SUCCESSFUL (total time: 1 second) Maybe now I have two RXTXcomm library .... :? This error because I have added the RXTXcomm.jar from a folder (/home/ubuntu) But How can I find the other RXTXcomm.jar , if it exist ? If I find the other jar file I can remove this from the project and to add the other one Well , I don't know .....
for me is impossible to solve this problem , udoo use the serial port ttymxc3 with other application such as Arduino ide , but I don't know where to find this library .when I try to install RXTXcomm.jar and librxtx.so and I launch a simple application there are several problems and arduino doesn't work anymore ......... Two weeks to understand this problem without success , and after I saw milion of web pages, Raspberry books also but there are some differences between the two systems , I don't know in the 2014 is difficult to use a serial port I don't want to use Android adk just for a serial port .I want to use ubuntu on my udoo but this is not easy Very bad situation
using these commands by the terminal .... sudo find / -name RXTXcomm.jar I have discovered that Arduino IDE (which it works over java) uses already this library , as I thought ...... Pratically the answer of terminal is /opt/arduino-1.5.4/lib/RXTXcomm.jar is the location where the library is registered . Now I want to reinstall Netbeans and I add the library from this directory ....
hello xwalter , i'm having the same kind of problem, yet when I have written the same command of the terminal I found that there are many RXTXcomm.jar files in the system .. even when I added the file which you have specified I'm still getting the same error. could you please help? how did you fix it ?
Hi there everybody! In the UDOObuntu rxtxcomm is already installed. Otherwise, just follow this useful tutorial we did long time ago! https://github.com/UDOOboard/serial_lib ... aster/java Cheers!
the rxtxcomm is already installed , you are right mr Andrea ....because Arduino IDE use that library . But the problem is how to use rxtxcomm in java code becaus ein eclipse for example I have added the external library but when i compile I get the same problem Also Eclipse is running slowly and the quad core cpu over the heat sink is hot ....
the problem is where to copy the ".so" file ....I think ".so" is like ",dll" in windows , pratically is the compiled library which connect directly to the driver ....isn't?
Yes, you're right, .so is the equivalent of dll in Windows Check: http://superuser.com/questions/71404/what-is-an-so-file Have you followed this tutorial? In particular, this part: If you are in a UDOO DUAL/QUAD distribution with the Arduino IDE preinstalled(UDOObuntu 1.0, Debian Wheezy 1.1) use the library contained in the /lib folder(this recompiled library handles properly the /dev/ttymxc3 internal serial of UDOO DUAL/QUAD): sudo cp /opt/arduino-1.5.4/lib/librxtxSerial-2.2pre1.so /usr/lib/jvm/java-7-openjdk-armhf/jre/lib/arm/ sudo cp /opt/arduino-1.5.4/lib/RXTXcomm.jar /usr/share/java/ cd /usr/lib/jvm/java-7-openjdk-armhf/jre/lib/arm/ sudo ln -s librxtxSerial-2.2pre1.so librxtxSerial.so What error are you getting? What part don't you understand or it's explained badly?
Dear Andrea ..... sudo cp /opt/arduino-1.5.8/lib/librxtxSerial.so /usr/lib/jvm/java-7-openjdk-armhf/jre/lib/arm/ ....better....
now the example at https://github.com/UDOOboard/serial_libraries_examples/tree/master/java is working
